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Deauville criteria. Visual interpretation of the PET-CT scan uses a 5-point scale (ie, the Deauville criteria). Baseline and I-PET scans are scored according to uptake in sites initially involved by lymphoma as: (1) no uptake, (2) uptake = mediastinum blood pool, (3) uptake = liver, (4) moderately increased uptake > liver, or (5) markedly increased uptake > liver and/or new lesions. A score of 1-3 was regarded as negative and 4 or 5 as positive (Figure 1). This scale has been used effectively in Hodgkin lymphoma (HL), but in DLBCL, the results once again are mixed.
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